Method of producing a transparent polychromatic printed iridescent image
AssigneeFasver
InventorsFrancois TRANTOUL, Eric PHILIPPE, Laurence BES
Life of this patent
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Abstract
A method of producing a transparent polychromatic printed iridescent image (8) of any kind in which at least two colors change simultaneously when there is a change in the viewing angle of the image under illumination by at least one visible light source.
Claims17
A method of producing a transparent polychromatic printed iridescent image (8) of any kind in which at least two colors change simultaneously when there is a change in the viewing angle of said image under illumination by at least one visible light source, wherein:
- at least two images, called printed monochromatic images, are printed separately, one after the other,
- each printed monochromatic image is printed using a printing composition which comprises a proportion of a powder comprising at least one interference pigment, said powder being dispersed in a liquid printing medium, each interference pigment and said proportion are so chosen that said printed monochromatic image is transparent,
- the interference pigments of each printing composition are so chosen that the printed monochromatic images are of different colors,
- the different printed monochromatic images form, according to a first angular range of visualization, a polychromatic transparent image according to a first composition of colors in additive synthesis and, according to a second angular range of visualization, which is different from said first angular range of visualization, a second composition of colors in additive synthesis.
A printed iridescent image of any kind which is transparent and polychromatic and wherein at least two colors of said printed iridescent image of any kind change simultaneously when there is a change in the viewing angle of said image under illumination by at least one visible light source.
Dependencies are inferred from the claim text.